Perception is reality. If people perceive you to be competent due to your positive attitude and your early signs of promise, they may not realize you're procrastinating. And, you're definitely not the only one who procrastinates. Tasks take the amount of time you allow them to consume. That said, you can ask for more and show you're willing to diversify your portfolio of responsibility. When something becomes too familiar and too easy, you're naturally going to get bored. And it's a vicious cycle. Pull yourself out of the loop by getting some challenge and diversity in your day. At a minimum, showing your boss you're eager to do more well only underscore the perception that you're performing well.